Mathias schlegel



M. |SCHLEGELI vHot Air Stove.

Patented Dec.- 29, 1868.'

einig-.55' mii@ fr) 7412 ay s.

N. PETERS. Fhaemmgmpher. washington. n, c.

'cited MW mf-feta --w- Maag( @fide i MATHIAS -SCHLE.GEL, OF ST. JACOB, ILLINOIS. Laws Patent No. 85,404, ma December 29,1868.

HOT-AIR STOVE.

The 'Schedule referred to in thele Letters Patent and making parl;` of the s'ame.

To all lwhom't't ma/y concern -Be it known that I, MATHIns SCHLEGEL, of St. Jacob, in the county of Madison, and State of Illinois, have invented a new and improved lHot-Air Stove.; and Ido hereby declare that the following is a full, clear, and exact description thereof, which willenablc others skilled in the art to make and use the same, reference being had to the'accompanying drawings, forming part of this specification, in which#- I Figure 1 represents a sectional elevation of my improved hot-airstove.

'Figure 2 is a detached vertical section of the inner drum of the saine.

Figure 3 is an inverted plan view, produced by a horizontal section on the line xx, fig. l.

Figure 4 is a horizontal section of the same, taken on the plane ofthe line y y, iig. l.l

Similar letters of reference lindicate like parts.

'The object'of this invention is to produce a hot-air stove in which the largest possible amount of cold air is heated by the products of combustion, so that proportionately more heat than usual is produced by au equal amount of fuel.

The invention consists in such an arrangement of smoke and air-channels, and conduits, thatthe desired object is obtained by very simple apparatus.

A, in the drawing, represents the bottom plate of my improved stove. The same is of' circular or other suitable form, and is made, like the other parts of my stove, of sheet or cast-metal, or other'suitable material.

It is elevated above the floor by means of feet B B, of :suitable number and kind.

On the plate A stands vthe base, C, and above the said base rises the main outer shell D of thc stove. rIhis shell can be made ofthe shape shown, i. e., with its lower part tapering downward, or of any other suitF able form.

Within the lower part ofthe shell, and a short dis-A tance from the same, is arranged another shell, E, Whichforms the' fire-chamber F. The bottom of this vessel, E, isthe grate G, under which, in the base C, au ash-pan, H, is arranged.

The ash-pan, which is clearly shown in iig. 4, does not iill the whole base, but leaves spaces a, c at its sides, which communicate with the annular space b, that is formed between the shells D and E.

The plate A has apertures c, that can be closed by means of gates d, and through which air can enter the spaces a from under the stove, to be he( ted by the re in the lire-chamber.

Thefire-place F is provided with door, e, through which fuel can be fed into the stove. The casing of this door is of course formed by interrupting the annular space b, as shown.

The top of the -re-placeF is closed by means of a plate, f, said plate extending also over the space b, as

shown.

the plate j; .with the fire-chamber, and serves to con` duct the smoke upward, spirally around the cylinder,

lhe smoke thus serves to heat the air inthe cylinder I, and that inthe as indicated by arrows l in iig. 1.

passage m.

The passage m communicates, by means of apertmes o in the plate j; (see iig. 3,) with the annular space b, so that' the air rising tlnoughthe holes o will be conducted from the space h into the passage m, whence it can be carried oli in a heated state, by suitable means.

The chamber h of the cylinder I communicates, by a suitable aperture, with the space b, so as also to he hlled with hot air, while the chamber t is or may be` filled with water, which can be drawn off through a pipe, p.'

Each. chamber, h and t', has its removable coverk in the main covering-plate lr ofthe whole apparatus, as shown in fig. l, to allow notonly the inspection of its interior, but also insertion of water, 86e.

The iire in this stove only comes in direct contact with the sides of the vessel F, and with the plate f. These parts must, therefore, loe-made strong and sub# stantial. The others can all be made light, and of cheap material.

The cylinder I should be made removable, soas to allow the repair-of the fire-place.

The spiral plates j and 7; can be cast either to the outer shell I) or to the cylinder, or may be otherwise zn'ianged.

. Having thus described my invention,

I claim as new, and desire to secure by LettersV Patent- 1. The apl'ilication, to a hot-air stove, of the cylinder I, around which the two spiral passages, Z and on', one for smoke and the other for hot air, are formed, substantially as herein shown and described, for the purpose speciiicd.

2. The combination of the plate A, base C, shell D,

Witnesses:

ALBERT Os'rHoFF, JOSEPH SOMM. 

